Adjustable coupling for electric-installation tubes.



W. H, VIBBEB. ADJUSTABLE COUPLING FOR ELECTRIC INSTALLATION TUBES.

APPLIGATION FILED JAN.2,1909,

Patented Feb. 23, 1909.

6; M, G 4 QZMZ UNITED s'rnrns PATENT oriuon H. VIBBER, OF NEW LONDON, CONNECTICUT, ASSIGNOR OF ONE-HALF TO THE GILLETTE-VIBBER 60., OF NEW LON DQN, CONNECTICUT,

,A CORPORATION.

ADJ 'UETABLE LQUPLING- FUR 331EGTRELEZTSTALLATION TUBES Application filed January 2, 1568.

Specification oi Letters Patent.

To all-whom it may concern:

Be it known that 1, WHEELER H. Sienna a citizen of'the United States, residing at ew London, in the county of New London and State of Connecticut, have invented new and useful Improvement in Adjustable Couplings for Electricdnstallatio Tubes; and I do hereby declare the folio 1g, when taken-1n connection with the act .mpanying drawings and the numerals reterence W 3 said drawpart of this specification, and

represent, in

Figure l a view partly in side elevation and-partly in section, of an adjustable coupling for electric installation tubes, con structed in accordance with my iiITfi fiHti0H Fig. 2 a view thereof in section on the line ab of Fig. 1. Fig. 3 detached view in side elevation of the coupling sleeve.

his invention relates to an improvement I in adjustable couplings for electric'installation tubes, the object being to roduce at a 4 having perforated 40' therein by the binding s --;stallation tubes 8 are inserted" into low cost for manufacture, an e 'ective, convenient water tight coupling constructed articular reference to coupling flexible metal tubes, though. not limited to such use.

With these ends in view my invention con sists in the construction and combination of parts to behereinafter described and pointed out in the claims.

In carrying I I shown, I employ a couplmgsleeve 2 formed near its respective ends out inyinvention as herein with transverse slots I l I g I I I l I I l l l I I l I I l l I 1 3 and consisting of a sheet of metal folded into the form of a tube or sleeve'.- Each 0;" these slots receives a ends 5 wider than the central portion or body of the strap, the said ends being lapped over each other and perforated for the race tion of a binding screw 6 carrying a nut 7. lexibl'e metal electric inthe opposlceve2 and held in place raps 4, the screws 6 being operated to move the strap isversely 111 the slots 3, whereby the tubes 8 are gripped by the straps and drawn by the same against the inner face of the sleeve 2 on the side thereof a acent to the nuts 7. The tubes 8 are thus firmly connected by the ling tube 2. Preferably I shall locate site ends of the said yielding bindingstrap specification in the a considerable range of variation in the diameter of the'tubes 8.

l haves oken of my improvement as being particularly designed for use in conjunction with flexible metal electric installation tubes, but it "may also be used with fibrous tubes, by which term I mean to include woven tubes and those covered with canvas.

l claimzi. In installation tubes, the combination with a coupling-sleeve having its respective ends formed with transverse slots, of yieldin binding-straps entering the said slots an having their ends overlapped and perforated, binding-screws passing throu h s the overlapped and perforated ends of t e straps and each carrying a binding nut, and. electric installation tubes enteringlthe opposite ends of ich they are held by the coupling sleeve in w the transverse adjustment of the saidstraps in the said slots,"

2. in an adjustable coupling for electric installation tubes, the combination with a con ling sleeve formed at its respective ends witll transverse slots, of binding straps l0- cated in the said slots and provided with bindi s screWs-enge in with the cou 1m 116 n g b sleeve, whereby the straps are caused to function, a flexible water-excluding tube located within the couplingsleeve and passing through the said straps, and electric installation tubes entering the oppositeends of the said flexible water-excluding tube which is clasped upon them by the said straps when the same are adjusted by the binding-screws testimony whereof, I have signed this presence of two subscribmg witnesses.

WHEELER H. VIBBER.

Witnesses:

Mirna B. LEwrs, ALHEDA C. VIISBER.

an adji'istable coupling for electric 

